HK45 Hop-up

Sorry for asking if this is plainly detailed elsewhere, but what exactly is the "new hop up"? I just bought a brand new ATP, but (at least visually) the hop up is identical to all my other KWA guns. What's been changed / improved in regards to the HK45?

Good to know. Thanks. So, to be clear, that new system is not employed in the ATP. Correct? I just looked at mine, and saw nothing like those two prongs. But, I also don't even see anything like a ball baring, either, when I twist the hop-up all the way to the left. Am I supposed to see something?

I don't like the new design..my hk45 out of the box would not shoot anything less then a .40g bb..I had to bend the tb so it didn't apply soo much hop up. In my lm4 I completely removed the guts of the hop up unit and used the old style with ball bearing.

I don't like the new design..my hk45 out of the box would not shoot anything less then a .40g bb..I had to bend the tb so it didn't apply soo much hop up. In my lm4 I completely removed the guts of the hop up unit and used the old style with ball bearing.

I actually get really good performance with KSC 0.30g bbs with the new hop up. Compared to my ATP, i get much less shot to shot variation and significantly more range with the new design.

I actually bent the tab in the hop up that applies the downward pressure for hop up..now I can shoot .30g bbs no problem.

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freaking awesome tip. I just installed the creation outer barrel and tbb but for some reason the bbs kept on lobbing up. After rebending the copper lip, now I can shoot .28s straight as Richard Simmons.

freaking awesome tip. I just installed the creation outer barrel and tbb but for some reason the bbs kept on lobbing up. After rebending the copper lip, now I can shoot .28s straight as Richard Simmons.